Compare mosfet with jfet, Electrical Engineering

Assignment Help:

Q. Compare MOSFET with  JFET?

a. In enhancement and depletion types of MOSFET,the transverse electric field induced across an insulating layer deposited on the semiconductor material controls the conductivity of the channel.In the JFET the transverse electric field across the reverse biased PN junction controls the conductivity of the channel.

b. The gate leakage current in a MOSFET is of the order of 10-12 A. Hence the input resistance of  a MOSFET is very high in the order of 1010  to 1015 W.The gate leakage current of a JFET is of the order of 10-9 A and its input resistance is of the order of 108 W.

c. The output characteristics of the JFET are flatter than those of the MOSFET and hence , the drain resistance of a JFET (0.1 to 1MW)is much higher than that of MOSFET(1 to 50 kW).

d. JFETs are operated only in the depletion mode.The depletion type MOSFET may be operated in both depletion and enhancement mode.

e. Comparing to JFET , MOSFETs are eaiser to fabricate.

f. MOSFET is very susceptible to overload voltage and needs special handling during installation.It gets damaged easily if it is not properly handled.

g. MOSFET has zeo offset voltage. As it is a symmetrical device, the source and drain can be interchanged.These two properties are very useful in analog signal switching.


Related Discussions:- Compare mosfet with jfet

Show crystal - oscillator circuits, Q. Show Crystal - Oscillator Circuits? ...

Q. Show Crystal - Oscillator Circuits? The simplest crystal-oscillator circuit is shown in Fig. 6-2A. An equivalent circuit is shown in Fig. 6-2B., where C4 represents the grid

Induction motor, principle and operation of a 3phace induction motor

principle and operation of a 3phace induction motor

LED, PRINCIPLE OF LED

PRINCIPLE OF LED

Interpretation and analysis using remote sensing, Q. Interpretation and ana...

Q. Interpretation and analysis using remote sensing? Interpretation and analysis using remote sensing Various characteristics of a river can be understood by studying its planf

Define the term real time clock, Define the term real time clock. A re...

Define the term real time clock. A real-time clock maintains the time in real time, which is, in hours and minutes. For the real-time clock the software contains an interrupt

High level language - third generation language , High Level Language ( thi...

High Level Language ( third Generation Language ) The difficulties of low  level  languages are overcome  by high  level languages. In  assembly  language  mnemonics  were used

Explain the different instruction formats, Explain the different instructio...

Explain the different instruction formats with examples The instruction set is grouped into the following formats One byte instruction MOV C,A Two byte instruction

Define the gauss seidel method, Define the Gauss Seidel Method The Gaus...

Define the Gauss Seidel Method The Gauss-Seidel method is an iterative method in which the voltage of each node is calculated in turn using the most up to date voltages for the

Calculate the unknown thermal conductivity, Derive the mathematical 3-D hea...

Derive the mathematical 3-D heat conduction equation in Spherical Coordinates? A furnace is made up of three layers of thicknesses 250 mm, 150 mm nad 100 mm with thermal conduct

Analysis on solar charging system buck converter with VMC, PLS WRITE THE IN...

PLS WRITE THE INTRODUCTION, METHODOLOGY AND LITERATURE REVIEW

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd